Vulcanizing machine



April 7, 1925.

W. A. GWYNN VULCANIZING MACHINE Filed April 14, 1922 Patented Apr. 7, 1925.

'UNETED STATES imacat FFQE. c

WILLIAM A. Gwynn, or s'r. LOUIS, MISSOURI, 'nssisn'on rro sUsIE n. GWYNN, or ST. LOUIS, MISSOURI.

VULCANIZING MACHINE.

Application led April-14, 1922. Serial No. 552,530.

To @ZZ whom it may concern.'

Be it known that l, WILLIAM A. GWYNN, a citizen ot the United States, residing Vin the city of St. Louis and State of Missouri, have invented new and useful Improvements in Vulcanizing li/lachines, ot whichthe following is a specification.

This invention relates to vulcanizing machines ot the type shown in my pending application. Ser. No. 121,816, tiled November 5th. 1920.

lhe present invention embodies a novel construction of vulcanizing chamber shown but notclaimed in the said pending application; the invention is further directed Yto novel means for securing the said vulcanizing chamber in position in the casing; and linally, another feature ot the invention relates to novel means for securing the lelectric heater in position on the bottom of the vulcanizing chamber.

on the line 3-3 of Figure l, taken through they insulating chamber and surrounding casing to illustrate the method of securing the insulating chamber in substantially airtight relation with the chamber;

Figure et is a view on an enlarged scale, partly in section and partly in elevation, illustrating one means ot securing the electric heater to the bottom o't the Vulcanizing chamber; 1 Figure 5 is a similar View illustrating one step in the method followed for securing the heater in position', as shown in yFigure 4, consisting in screwing a bolt into the bottom ot the vulcanizing chamber; j

Figure 6 illustrates the next step which consists in cutting 0E the bolt flush with the bottom ot the vulcanizing chamber;

Figure 7, a third step which consists in screwthreading the portion ot Vthe bolt secured in thebottom of the vulcanizing chamber for a portion of its length; and

Y Figure 8 illustrates a modified means of holding the electric heater against the bottom ot the `vulcanizing chamber.

Referring to the drawing, the numeral l indicates casing which is preferably ot' wood andoblong in shape. Mounted in this casing and supported on the upper edges thereof. is a hollow vulcanizing chamber 2 which is adapted to contain water to be heated. y This vulcanizing chamber comprises a hollow rectangular Vessel open origii nally on its upper side,rand a permanent closure Sconstituting the vulcanlzing suriiace and which also projects beyond the walls of thechamber 2 on all tour sides to provide flanges l by means ot' which the vulcanizing chamber is supportedfon the f to support the vulcanizing chamber in the' casing l. On either end of the Vulcanizing chamber 2 there is secured, as by welding. riveting or otherwise, a strap 5, these straps being apertured at their lower ends, and after the insulating chamberis in posit-ion on the casing, it is pressed down firmly thereon and holes bored inthe ends ot casing l to correspond with apertures in the ends of the straps 5. rEhereatter bolts 6 are passed through said bores and apertures to hold thevulcanizing 'chamber irmly and 1n substantially `air-tight engagement with the top of the casing l. The manner of securing an electric heater 7 on the bottom of the vulcanizing chamber is another feature of the invention and this will now be described.

ln the preferred construction, l first screw a bolt 8 into the bottom 9 ot the vulcanizing chamber and wedge the shoulder at the termination of the threaded portion firmly against the said bottom by using great pressure in giving a linal turn to the bolt. lifter this the head andsniootli shank -portion ot the bolt are cut ott tlush with the bottom 9,

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' up into the screnfthreaded aperture 11 in bolt end 1-0. In this Way the heater is conveniently and lirmly securedrin posit-ion and at the same time, the bolt end lfprojecting up through the-Water inthey vulcanizing chamber, acts as a heat radiating means and facilitates heating the Water inthe vulcanizing chamber.

In TEiga-re 8" there is illustrated a modification in the means for supporting the electric heater in contact with `the'bottom off the v vnlcanizing chamber a-n'dxivith the bolt end V10. ln this arrangement a bail 13, in the formoit a flat inetalstrip bent at `right angles'toitself, -as indicated at 14, at points near'its ends, is Welded or otherwise secured at' its eXtrem/ities t-o opposite sides of the vulcanizing chamber 2. rThe bailV 13 has mounted centrally oic its length, `binding screw 1-5, the inner end of Which is adapted to be screived into engagement with the under side of the heater 7 and thusfhold the saine-in engagen'ientwvith the-bottom ofthe vulcaii-izing chamber, as show-n.

The parts shown in Figuieflforinfnofpart of the present invent-ion in andvof themselves, but t-'o make the subject-matter of the invention clear, they may be briefly described asifolloivs:

Thenumeral 16 indicates a bail -Which serves as a support orthe clamping arms 1T when they are turned out of position, and as'ahandlefby means of which the vulcanizer may be carried, and tinally, as a support for a tube When only a small portion of it is clamped on the viilca-nizer. The nu.- meral 18 indicates a gage controlled yby steam pressurecommunicated through a pipe 19 from the vulcanizing chainberand which gageis inthe circuit oi' the source of electrical current 20 for the electric heater F7 softliat asin lily-previous application `referred to, the heater may be cut oli When the pressureof the'steaiiihasreached a given amount. `rlhe vnumeral 21l indicates the tube leading from the vulcanizing chamber through the casing and provided AWith a safety valve @i2-tor relieving unduepressure ci steam generated in the said vulcanizing chamber.

l rind that the construction-herein illustrated presents the simplest and most economical and ciiicient arrangement 0ie a vulcanizer oi theY type shown, of which I have knowledge. rhe manner of constructing the bottom of the vulcanizing chamber.

casing, isV of ,decided advantage as not only Eproviding a support, but likewise insuring a hermetically sealed chamber.

yEhe mcanstor holding the electric heater in position, illustrated in Figures 2 to 7,

.'coiistitiite thepreterred means for this purpose, as not only does the main holding means, comprising-the bolt end 10, also act as Aa heat radiating member, 'but the construction provides practically no partsprojecting into the casing, thersole exception bei-ngfthe head of the bolt l10, so that-the heater can be'thoroughly surrounded With heat insulating material, such as asbestos,

mineral ivoolfor the like, as shown, `and thus radiation of =heat from the heater through the casing beminimized.

I claim: y 1. ln a vulcanizing apparatus, in combination with a casing, a vulcanizing chamber l having a top orcover Welded thereon and projecting beyond the bodyl oi" the vulcan- .iizing chamber to fori-n ilangedsupports y-niounted onthe upper edge ofsai'd casing.

2. In `a vulcanizing apparatus, in combination with a casing, a vulcanizing chamber having atop or cover Weldedthereon and projecting beyond the body otthe chamber to a-oid flanged supports mounted onV the upper edge of said casing, vand means on said chamber torsecuringthe said 'flanged supportsliniirm engagement With the edges of the said casing.

'3.1m avulcanizingapparatus, in combination with a casing, a v-ulcanizing chamber having atop orcover Welded thereto and vprojectingV beyond the chamber to provide A'flanged supports mounted on the upper edge of said casing, straps secured Vto opposite sidesof said chamber and having the free ends provided With bolt holes and bolts passedthrough thel Walls of saidr casing and secured insaidV bolt holes. b

t. In a vulcanining apparat-us, in combination with a vulcanizing chamber, alinetal -inember secured in tlielbottom thereof` provided with a screwthreaded aperture, an

\ electr-ic heater 4applied to thev bottom. ofsaid vulcanizing chamber and a screw passed through saidheaterand into said member forV holding the heater in contact Withlthe 5,;Ina vulcanizi-ng apparatus, in combination With a vulcanizing chamber, la metal member `secured :in the bottom` of the vulcanizing chamber and projecting upward into the interiork thereof.y and provided. vwith a scr ivfthreaded aperture, vanelectric'heater applied tothe bottom of the vulcaniz'ing chamber, and a screw passed through saidv Y heater and'into said? metal member orsecuring the heater in engagement With the under side of the vulcanzng chamber and with said metal member.

6. In a vulcanizng apparatus, in combi nation with Vulcanizing chamber, a Screwthreaded member screwed through the bottom of said chamber to project .into the interior of said chamber and having steamtight connection with said bottom and provided with a `longitudinal screwthreaded aperture, an electric heater applied to the bottom of said vulcanizing chamber and to said metal member and a screw passed through said heater having a screWthread shank engaged in said aperture and its head in the bottom of said heater to hold` the heater in irm engagement With the bottom of the Vulcanizing chamber and with said metal member.

7 In a if'ulcanizing apparatus, in combination with a Vulcanizing chamber, a metal member secured in the bottom of the vulcanizing chamber and projecting upward into the interior thereof, an electric heater applied to the bottom of said Vulcanzing chamber at the place of application of Said ,metal member, and means for holding the electric heater in firm engagement with the bottom of said chamber.

In testimony whereof, I have hereunto set my hand.

WILLIAM A. GWYNN. 

